Journal of Materials Science

, Volume 13, Issue 12, pp 2645–2649 | Cite as

Influence of chromium on superplasticity in ultra-high carbon steels

  • J. Wadsworth
  • O. D. Sherby
Papers

Abstract

The influence of chromium additions to ultra-high carbon steels has been investigated. A common bearing steel (52100 containing 1% C and 1.5% Cr), a 1.6%+1.5% Cr steel (designated 52160) and a plain 1.6% C steel have been compared. Chromium is found to enhance greatly the superplastic properties. This is because the chromium enters the cementite and thereby stabilizes it. This in turn allows very little grain growth in ferrite to occur during superplastic deformation. A value of 1220% elongation to failure in 52160 was found at 650° C at an initial engineering strain rate of 1% min−1. The influence of strain rate on the elongation to failure has also been investigated in this material.

Keywords

Polymer Chromium Ferrite Carbon Steel Cementite 

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Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • J. Wadsworth
    • 1
  • O. D. Sherby
    • 1
  1. 1.Department of Materials Science and EngineeringStanford UniversityStanfordUSA

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